Flashcards
phyisics revision
Cards in this deck (4)
- 1atomic structureproton: relative mass 1 relative charge +1
neutron: relative mass 1 relative charge 0
electron: relative mass 0.0005 relative charge -1 - 2Half-lifeHalf-life is the time it takes for half of the unstable nuclei in a sample to decay or for the activity of the sample to halve
- 3AlphaAlpha radiation consists of alpha particles. An alpha particle is identical to the nucleus of a helium atom, which comprises two protons and two neutrons.
- 4betaBeta radiation consists of high energy electrons emitted from the nucleus. These electrons have not come from the electron shells or energy levels around the nucleus. Instead, they form when a neutron splits into a proton and an electron. The electron then shoots out of the nucleus at high speed
Information
- Description
- Flashcards on phyisics revision, created by Gabriel Williams on 09/01/2019.
- Created by
- Gabriel Williams · Jan 2019
- Updated
- Jan 9, 2019
- Views
- 0
- Rating